2BTJ4-AEMwireless microphone

JiangmenShengdongElectronicTechnologyCo.,Ltd. Address:Building2,3rdFloor,NorthSide,PlotA4,Zone2, EnpingIndustrialPark,EnpingCity,China AttestationStatements NotCoveredEntityApplicant&NotCoveredEquipment To:FederalCommunicationsCommissionDate:Jan.5,26 7435OaklandMillsRoad, Columbia,MD21046,USA Ref:InformationRequiredbySection2.911(d)(5)(i)&(ii) FCCID:2BTJ4-AEM JiangmenMilanphotoelectricco.,Ltd(“theapplicant”)certifiesthat,asofthedateofthefilingofthe application,theapplicantisnotidentifiedontheCoveredList,establishedpursuantto§1.50002of referencechapter,asanentityproducing“covered”communicationequipment.Theequipmentfor whichauthorizationissoughtisnot“covered”telecommunicationsequipmentandvideosurveillance equipmentproducedbyentitiesidentifiedontheCommission’sCoveredListthatprohibitedfrom receivinganequipmentauthorizationpursuanttosection§2.903oftheFCCrules. Sincerelyyours, ApplicantSignature PrintedName:BingqiuHuang Title:Manager Address:Building2,3rdFloor,NorthSide,PlotA4,Zone2,EnpingIndustrialPark, EnpingCity,China Tel:13536219003 Email:[email protected]

JiangmenShengdongElectronicTechnologyCo.,Ltd. Address:Building2,3rdFloor,NorthSide,PlotA4,Zone2, EnpingIndustrialPark,EnpingCity,China 1|Page AttestationStatements To:FederalCommunicationsCommissionDate:Jan.5,26 7435OaklandMillsRoad, Columbia,MD21046,USA Subject:AttestationofCompliancewithFCCCoveredListSoftwareRequirements FCCID:[2BTJ4-AEM] ProductName:[ wirelessmicrophone ] Thisletterservesasanattestationthattheequipmentidentifiedabove☐is/☒isnot(selectone)"covered" softwareasdefinedundertheFederalCommunicationsCommission(FCC)CoveredListrequirements,as outlinedinFCC22-84andKDB986446. Specifically,theundersignedcertifiesthattheequipmentforwhichauthorizationissought: 1.Doesnotcontaincybersecurityoranti-virussoftwareproducedorprovidedbyKasperskyLab, Inc.oranyofitssuccessors,assignees,parents,subsidiaries,affiliates,oranyentitythathasrebranded orrelabeledsoftwareproducedbytheaforementionedentities. 2.Doesnothavethecapabilitytostore,run,ordeliveranysoftwareidentifiedontheFCCCoveredList, includingbutnotlimitedtocybersecurityandanti-virussoftware. Tosupportthisattestation,theappendixevaluationdocumentationhasbeenpreparedandisincludedinthe certificationfiling. Thisattestationisbasedonathoroughevaluationofthedevice'sdesign,functionality,andsoftware environment.Theundersignedaffirmsthattheinformationprovidedisaccurateandcompletetothebestof theirknowledge. Sincerelyyours, ApplicantSignature PrintedName:BingqiuHuang Title:Manager Address:Building2,3rdFloor,NorthSide,PlotA4,Zone2,EnpingIndustrialPark,EnpingCity,China Tel:13536219003 Email:[email protected] JiangmenShengdongElectronicTechnologyCo.,Ltd. Address:Building2,3rdFloor,NorthSide,PlotA4,Zone2, EnpingIndustrialPark,EnpingCity,China 2|Page EvaluationregardingtotheCoveredListSoftware: Compliance Methodology EvaluationProcessResults Deviceis Inherent compliance ☒ TheChipset(s)usedislimitedtorun theCybersecurityoranti-virus software. Compliance ☒ TheMemoryusedislimitedtorunthe Cybersecurityoranti-virussoftware. Compliance ☒ Thereisstoragecapacitylimitationfor storeorinstalltheCybersecurityor anti-virussoftware. Compliance ☒ Operatingsystemusedislimitedto run,installordelivertheCybersecurity oranti-virussoftware. Compliance Deviceisnot Inherent compliance ☐ EvaluationBasedonSoftware BillofMaterials(SBoM) Seeattached“SBoM“ Note:TheSBoMcontentislimited tothescopeofcoveredlist software(e.g.antivirusand cybersecuritysoftware). ☐ EvaluationBasedonScanfor Softwareonthedevice ☐ EvaluationBasedonFilesystemscan ☐ EvaluationBasedonRunning softwarecheck

JiangmenShengdongElectronicTechnologyCo.,Ltd. Address:Building2,3rdFloor,NorthSide,PlotA4,Zone2, EnpingIndustrialPark,EnpingCity,China ReferenceNo.2026UL0005 U.S.AgentLetterofAttestation To:FederalCommunicationsCommission 7435OaklandMillsRoad,Columbia,MD21046,USA Date:Jan.8,26 Ref:AttestationStatement–Part2.911(d)(7)filing FCCID:2BTJ4-AEM [JiangmenShengdongElectronicTechnologyCo.,Ltd.](“theapplicant”)certifiesthat,asofthedate ofthefilingoftheapplication,[TTSMARKETINC.](“theagent”)isourdesignatedU.S.agentfor serviceofprocessfortheabovereferenceFCCID.Theapplicantacceptstomaintainanagentfor serviceofprocessintheUnitedStatesfornolessthanoneyearaftereitherthegranteehas permanentlyterminatedallmarketingandimportationoftheapplicableequipmentwithintheU.S., ortheconclusionofanyCommission-relatedadministrativeorjudicialproceedinginvolvingthe equipment,whicheverislater.Theapplicantfurtheracknowledgesitisourresponsibilitytoinform theFCCwhenevertheagentinformationchanges. [TTSMARKETINC.]("theagent”)understanditistheagent'sobligationtoacceptserviceof processintheUnitedStatesformattersrelatedtotheapplicableequipment,andatthephysicalU.S. addressandemailaddress. DesignatedU.S.Agent CompanyName:TTSMARKETINC. FRN:0036806057 GC:N/A Address:1178BroadwaySte324,NewYork,NY 10001.USA ContactPerson:MaverickLim Tel:001-(646)305-2908 Applicant CompanyName:JiangmenShengdongElectronicTechnologyCo.,Ltd. FRN:0037725744 Address:Building2,3rdFloor,NorthSide,PlotA4, Zone2,EnpingIndustrialPark, EnpingCity,China Signature: ContactPerson:BingqiuHuang Tel:13536219003Email:[email protected]

JiangmenShengdongElectronicTechnologyCo.,Ltd. Address:Building2,3rdFloor,NorthSide,PlotA4,Zone2, EnpingIndustrialPark,EnpingCity,China (Jan.05,2026) FederalCommunicationsCommission AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 Subject:ConfidentialityRequestfor:FCCID:2BTJ4-AEM PursuanttoSections0.457and0.459oftheCommission’sRules,weherebyrequestpermanent confidentialtreatmentoftheexhibitsaccompanyingthiscertificationapplicationasoutlinedbelow:  BlockDiagram Schematics OperationalDescription Theaboveexhibitscontaintradesecretsand/orproprietaryinformationthatarenotpubliclyavailableand materialsthattheApplicanthasspentconsiderableeffortsindeveloping.Publicdisclosureofthesemay beharmfultotheApplicantandgiveanunfairadvantagetocompetitorsonthemarket. PursuanttoDA04-1705,theapplicantalsorequeststemporaryconfidentialtreatmentoftheexhibits outlinedbelowforaperiodof(upto180)daysfromthedateofequipmentauthorizationandpriorto marketingintheUnitedStatestopreventtheprematurereleaseofanysensitiveinformation.Applicantis awareoftheirresponsibilitytonotifyDERYCOMintheeventinformationregardingtheproductorthe productismadeavailabletothepublicbeforetherequestedperiodhasexpired.  UserManual Sincerely, (Signature) PrintedName:BingqiuHuang Title:Manager Address:Building2,3rdFloor,NorthSide,PlotA4,Zone2,EnpingIndustrialPark,EnpingCity,China Tel:13536219003 Email:[email protected]

JiangmenShengdongElectronicTechnologyCo.,Ltd. Address:Building2,3rdFloor,NorthSide,PlotA4,Zone2, EnpingIndustrialPark,EnpingCity,China (Jan.05,2026) FederalCommunicationsCommission AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 Subject:AgentAuthorizationforFCCID:2BTJ4-AEM I,theundersigned,herebyauthorize(ShenzhenNCTTestingTechnologyCo.,Ltd.)toactonour behalfinallmattersrelatingtothisapplicationforequipmentcertification. Anyactcarriedoutby(ShenzhenNCTTestingTechnologyCo.,Ltd.)shallhavethesameeffectas ourownandIacknowledgethatallresponsibilityforcomplyingwiththetermsandconditionsof certification,asspecifiedbyDERYCOMCERTIFICATIONSERVICES,INC.,stillresideswith(Jiangmen ShengdongElectronicTechnologyCo.,Ltd.). WecertifythatwearenotsubjecttoadenialoffederalbenefitsthatincludesFCCbenefitspursuantto Section5301oftheAnti-DrugAbuseActof1988,21U.S.C.§862,andthatnopartytotheapplication,as definedin47CFR§1.2002(b),issubjecttoadenialoffederalbenefitsthatincludesFCCbenefits pursuanttothatsection. Sincerely, (Signature) (FullnameofcontactpersonlistedonFCC’swebsite)BingqiuHuang (Title):Manager Tel:13536219003 Fax:/ Email:[email protected]

JiangmenShengdongElectronicTechnologyCo.,Ltd. ProductSimilarityDeclaration Productname:wirelessmicrophone Modelname:AEM-1,AEM-A1,AEM-2,AEM-B1,AEM-22, AEM-3AEM-32,GU02,GU04,PU02,PU04,PU33,PU66,PU88,TU02, TU04,KU02,KU04,KTU-33,KTU66,KTU88 FCCID:2BTJ4-AEM We(JiangmenShengdongElectronicTechnologyCo.,Ltd.)herebystate thatallthemodelsareelectricalidenticalincludingthesame softwareparameterandhardwaredesign(i.e.,circuitdesign,PCB Layout,RFmodule/circuit,antennatype(s)andantennalocation, componentsonPCB,etc.,),samemechanicalstructureand design(includingproductenclosure,materials,etc.,),theonly differenceisthemodelnumber Signature: Name:BingqiuHuang Title:Manager Place,date:Shenzhen,2026.1.4

Page1of5 ShenzhenNCTTestingTechnologyCo.,Ltd. A101&2FB2,Fuqiao6thArea,XintianCommunity,FuhaiStreet,BaoanDistrict,Shenzhen,China Hotline:400-8868-419Fax:86-755-27790922http://www.ncttesting.cn FCCID:2BTJ4-AEMExternalPhotos Page2of5 ShenzhenNCTTestingTechnologyCo.,Ltd. A101&2FB2,Fuqiao6thArea,XintianCommunity,FuhaiStreet,BaoanDistrict,Shenzhen,China Hotline:400-8868-419Fax:86-755-27790922http://www.ncttesting.cn Page3of5 ShenzhenNCTTestingTechnologyCo.,Ltd. A101&2FB2,Fuqiao6thArea,XintianCommunity,FuhaiStreet,BaoanDistrict,Shenzhen,China Hotline:400-8868-419Fax:86-755-27790922http://www.ncttesting.cn Page4of5 ShenzhenNCTTestingTechnologyCo.,Ltd. A101&2FB2,Fuqiao6thArea,XintianCommunity,FuhaiStreet,BaoanDistrict,Shenzhen,China Hotline:400-8868-419Fax:86-755-27790922http://www.ncttesting.cn Page5of5 ShenzhenNCTTestingTechnologyCo.,Ltd. A101&2FB2,Fuqiao6thArea,XintianCommunity,FuhaiStreet,BaoanDistrict,Shenzhen,China Hotline:400-8868-419Fax:86-755-27790922http://www.ncttesting.cn Antenna

wirelessmicrophone Model:AEM-1 FCCID:2BTJ4-AEM Input:DC12V/1A Thisdevicecomplieswithpart15oftheFCCRules. Operationissubjecttothefollowingtwo conditions:(1)Thisdevicemaynotcauseharmful interference,and(2)thisdevicemustacceptany interferencereceived,includinginterferencethatmay causeundesiredoperation.

Page1of5 ShenzhenNCTTestingTechnologyCo.,Ltd. A101&2FB2,Fuqiao6thArea,XintianCommunity,FuhaiStreet,BaoanDistrict,Shenzhen,China Hotline:400-8868-419Fax:86-755-27790922http://www.ncttesting.cn FCCID:2BTJ4-AEMInternalPhotos Page2of5 ShenzhenNCTTestingTechnologyCo.,Ltd. A101&2FB2,Fuqiao6thArea,XintianCommunity,FuhaiStreet,BaoanDistrict,Shenzhen,China Hotline:400-8868-419Fax:86-755-27790922http://www.ncttesting.cn Page3of5 ShenzhenNCTTestingTechnologyCo.,Ltd. A101&2FB2,Fuqiao6thArea,XintianCommunity,FuhaiStreet,BaoanDistrict,Shenzhen,China Hotline:400-8868-419Fax:86-755-27790922http://www.ncttesting.cn Page4of5 ShenzhenNCTTestingTechnologyCo.,Ltd. A101&2FB2,Fuqiao6thArea,XintianCommunity,FuhaiStreet,BaoanDistrict,Shenzhen,China Hotline:400-8868-419Fax:86-755-27790922http://www.ncttesting.cn Page5of5 ShenzhenNCTTestingTechnologyCo.,Ltd. A101&2FB2,Fuqiao6thArea,XintianCommunity,FuhaiStreet,BaoanDistrict,Shenzhen,China Hotline:400-8868-419Fax:86-755-27790922http://www.ncttesting.cn

FCCID:2BTJ4-AEM RFExposureEvaluation Limits Thecriterialistedinthefollowingtableshallbeusedtoevaluatetheenvironmentimpactofhumanexposure toradiofrequency(RF)radiationasspecifiedin1.1307(b) LimitsforMaximumPermissibleExposure(MPE) Frequencyrange (MHz) Electricfield strength (V/m) Magneticfieldstrength (A/m) Powerdensity (mW/cm 2 ) Averagingtime (minutes) (A)LimitsforOccupational/ControlledExposures 0.3–3.06141.63*(100)6 3.0–301842/f4.89/f*(900/f 2 )6 30–30061.40.1631.06 300–1500f/3006 1500–100,00056 (B)LimitsforGeneralPopulation/UncontrolledExposure 0.3–1.346141.63*(100)30 1.34–30824/f2.19/f*(180/f 2 )30 30–30027.50.0730.230 300–1500f/150030 1500–100,0001.030 f=frequencyinMHz Friistransmissionformula:Pd=(Pout*G)/(4*pi*r 2 ) Where Pd=powerdensityinmW/cm 2 ,Pout=outputpowertoantennainmW; G=gainofantennainlinearscale,Pi=3.1416; R=distancebetweenobservationpointandcenteroftheradiatorincm PdidthelimitofMPE,1mW/cm 2 .Ifweknowthemaximumgainoftheantennaandthetotalpowerinputto theantenna,throughthecalculation,wewillknowthedistancerwheretheMPElimitisreached. TestProcedure SoftwareprovidedbyclientenabledtheEUTtotransmitandreceivedataatlowest,middleandhighest channelindividually. TestResultofRFExposureEvaluation Modulation Frequency (MHz) Outputpower toantenna (dBm) Outputpower toantenna (mW) PowerDensity atR=20cm (mW/cm 2 ) Limit (mW/cm 2 ) Result DQPSK 553.5 6.7174.6956960.001554 1.0PASS 566 5.6963.7119320.001228 1.0PASS 578.25 6.2884.2540250.001408 1.0PASS Remark：Antennagainis2.21dBi SoaSARtestisnotrequired

专 业天线服务商 Professional antenna service provider 深圳市宝安区西乡固戍恒南一路C栋303 TEL:(86)755-23035723. FAX:0755-23036702 E-mail:[email protected] ADD: 303，building C,GUSHU Hengnan Road,Xixiang,Baoan district Shenzhen 项目型号Item Model: 弹簧天线spring antenna 天线型号Antenna Model 测 试 Test 许高富 Xu gao fu 审 核Review 范敏 Fanming 日 期Date 2024-4-24 天线测试报告 Antenna test report SHENZHEN FEIMIN TECHNOLOGY CO.,LTD. TEL:0755-23035723Mail:[email protected]:www.fmant.cn A1 测试设备和测试环境 Test equipment and test environment SHENZHEN FEIMIN TECHNOLOGY CO.,LTD. TEL:0755-23035723Mail:[email protected]:www.fmant.cn 测试设备 Test equipment u无源指标 Passive pointer u增益 transmission gain u效率 efficiency u3D方向图 3D direction map l有源指标 active marker lTRP总辐射功率 TRP total radiated power lTIS总接收灵敏度 TIS Total receiving sensitivity 探头微波暗室 Probe microwave darkroom Ø 频率 frequency：0.4GHz至6GHz 主要测试指标 Main test index SHENZHEN FEIMIN TECHNOLOGY CO.,LTD. TEL:0755-23035723Mail:[email protected]:www.fmant.cn 测试设备 Test equipment Agilent E5071C矢量网络分析仪 Ø频率：300 kHz至8.5GHz R&S CMW500 宽带无线通信测试仪 ØGSM/3G/4G ØWIFI/ Bluetooth ØNB-IoT SHENZHEN FEIMIN TECHNOLOGY CO.,LTD. TEL:0755-23035723Mail:[email protected]:www.fmant.cn 天线驻波比 Antenna SWR SHENZHEN FEIMIN TECHNOLOGY CO.,LTD. TEL:0755-23035723Mail:[email protected]:www.fmant.cn SHENZHEN FEIMIN TECHNOLOGY CO.,LTD. TEL:0755-23035723Mail:[email protected]:www.fmant.cn 天线回波损耗 Antenna Return loss 天线增益与效率 Antenna gain and efficiency SHENZHEN FEIMIN TECHNOLOGY CO.,LTD. TEL:0755-23035723Mail:[email protected]:www.fmant.cn 天线 Freq(MHz) Efficiency (％) Gian(dBi) 500 32.50 0.96 510 32.81 0.71 520 31.06 1.25 530 27.15 1.05 540 22.62 1.72 550 18.48 1.37 560 15.43 1.64 570 12.91 2.21 580 10.60 2.03 590 8.39 1.56 600 6.17 2.02 天线辐射方向图 Antenna Radiation Pattern SHENZHEN FEIMIN TECHNOLOGY CO.,LTD. TEL:0755-23035723Mail:[email protected]:www.fmant.cn 1.Antenna finished product 深圳市宝安区西乡固戍恒南一路C栋303 TEL:(86)755-23035723. FAX:0755-23036702 E-mail:[email protected] ADD: 303，building C,GUSHU Hengnan Road,Xixiang,Baoan district Shenzhen Thanks for your support！ 感谢您的支持 ！

Page 1 of 36 Hotline:400-8868-419http://www.ncttesting.cn FCCTESTREPORT FCCID:2BTJ4-AEM Product: wirelessmicrophone ModelName: AEM-1,AEM-A1,AEM-2,AEM-B1,AEM-22, AEM-3AEM-32,GU02,GU04,PU02,PU04, PU33,PU66,PU88,TU02,TU04,KU02, KU04,KTU-33,KTU66,KTU88 Brand: N/A ReportNo.: NCT250481181E1-1 Preparedfor JiangmenShengdongElectronicTechnologyCo.,Ltd. Building2,3rdFloor,NorthSide,PlotA4,Zone2,EnpingIndustrialPark, EnpingCity,China Preparedby ShenzhenNCTTestingTechnologyCo.,Ltd. A101&2FB2,Fuqiao6thArea,XintianCommunity,FuhaiStreet,BaoanDistrict, Shenzhen,People’sRepublicofChina TEL:400-8868-419 ReportNo.:NCT250481181E1-1 Page 2 of 36 Hotline:400-8868-419http://www.ncttesting.cn TESTRESULTCERTIFICATION Applicant’sname:JiangmenShengdongElectronicTechnologyCo.,Ltd. Address: Building2,3rdFloor,NorthSide,PlotA4,Zone2,EnpingIndustrialPark, EnpingCity,China Manufacture'sname:JiangmenShengdongElectronicTechnologyCo.,Ltd. Address: Building2,3rdFloor,NorthSide,PlotA4,Zone2,EnpingIndustrialPark, EnpingCity,China Productname:wirelessmicrophone Modelname: AEM-1,AEM-A1,AEM-2,AEM-B1,AEM-22,AEM-3AEM-32,GU02, GU04,PU02,PU04,PU33,PU66,PU88,TU02,TU04,KU02,KU04, KTU-33,KTU66,KTU88 Standards:FCCCFR47Part15Section15.236 Testprocedure:ANSIC63.10:2020 Dateoftest:Nov.12,2025-Dec.11,2025 DateofIssue:Dec.11,2025 ThisdevicedescribedabovehasbeentestedbyNCT,andthetestresultsshowthatthe equipmentundertest(EUT)isincompliancewiththeFCCrequirements.Anditisapplicableonlyto thetestedsampleidentifiedinthereport. Thisreportshallnotbereproducedexceptinfull,withoutthewrittenapprovalofNCT,thisdocument maybealteredorrevisedbyNCT,personalonly,andshallbenotedintherevisionofthedocument. TestEngineer: KevenWu/Engineer TechnicalManager: HenryWang/Manager ReportNo.:NCT250481181E1-1 Page 3 of 36 Hotline:400-8868-419http://www.ncttesting.cn TableofContentsPage TESTRESULTCERTIFICATION...................................................................................2 1.VERSION...................................................................................................................5 2.SUMMARYOFTESTRESULTS...............................................................................6 2.1TESTFACILITY.................................................................................................................7 2.2MEASUREMENTUNCERTAINTY....................................................................................7 3.GENERALINFORMATION.........................................................................................8 3.1GENERALDESCRIPTIONOFEUT.................................................................................8 3.2DESCRIPTIONOFTESTMODES....................................................................................9 3.3BLOCKDIGRAMSHOWINGTHECONFIGURATIONOFSYSTEMTESTED............10 3.4DESCRIPTIONOFSUPPORTUNITS(CONDUCTEDMODE)......................................10 4.EMCEMISSIONTEST.............................................................................................12 4.1CONDUCTEDEMISSIONMEASUREMENT..................................................................12 4.1.1POWERLINECONDUCTEDEMISSIONLIMITS..................................................12 4.1.2TESTPROCEDURE...............................................................................................13 4.1.3DEVIATIONFROMTESTSTANDARD..................................................................13 4.1.4TESTSETUP...........................................................................................................13 4.1.5EUTOPERATINGCONDITIONS...........................................................................13 4.1.6TESTRESULTS......................................................................................................13 4.2.1RADIATEDEMISSIONLIMITS...............................................................................16 4.2.3TESTSETUP...........................................................................................................17 4.2.4TESTPROCEDURE...............................................................................................17 4.2.5TESTRESULTS....................................................................................................17 5.MAXIMUMRADIATEDPOWER(EIRP)...................................................................22 5.1APPLIEDPROCEDURES/LIMIT.............................................................................22 5.2TESTPROCEDURE..................................................................................................22 5.3DEVIATIONFROMSTANDARD...............................................................................22 5.4TESTSETUP..............................................................................................................22 5.5EUTOPERATIONCONDITIONS..............................................................................22 5.6TESTRESULTS.........................................................................................................23 6.CHANNELBANDWIDTH....................................................................................25 7.NECESSARYBANDWIDTH....................................................................................28 7.1LIMIT................................................................................................................................28 7.2TESTSETUP...................................................................................................................29 7.3TESTPROCEDURE........................................................................................................29 ReportNo.:NCT250481181E1-1 Page 4 of 36 Hotline:400-8868-419http://www.ncttesting.cn TableofContentsPage 7.4TESTRESULTS..............................................................................................................30 8.FREQUENCYSTABILITY........................................................................................34 9.ANTENNAREQUIREMENT........................…

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Page1of2 ShenzhenNCTTestingTechnologyCo.,Ltd. A101&2FB2,Fuqiao6thArea,XintianCommunity,FuhaiStreet,BaoanDistrict,Shenzhen,China Hotline:400-8868-419Fax:86-755-27790922http://www.ncttesting.cn FCCID:2BTJ4-AEMTestPhoto Page2of2 ShenzhenNCTTestingTechnologyCo.,Ltd. A101&2FB2,Fuqiao6thArea,XintianCommunity,FuhaiStreet,BaoanDistrict,Shenzhen,China Hotline:400-8868-419Fax:86-755-27790922http://www.ncttesting.cn